Mechanisms of callose deposition in rice regulated by exogenous abscisic acid and its involvement in rice resistance to Nilaparvata lugens Stål (Hemiptera: Delphacidae)

2017 ◽  
Vol 73 (12) ◽  
pp. 2559-2568 ◽  
Author(s):  
Jinglan Liu ◽  
Haitao Du ◽  
Xu Ding ◽  
Yaodong Zhou ◽  
Pengfei Xie ◽  
...  
Keyword(s):  
Abscisic Acid ◽  
Nilaparvata Lugens ◽  
Callose Deposition ◽  
Nilaparvata Lugens Stål

scholarly journals Influence of Abscisic Acid-Biosynthesis Inhibitor Fluridone on the Feeding Behavior and Fecundity of Nilaparvata lugens

Insects ◽  
2019 ◽  
Vol 10 (2) ◽  
pp. 57
Author(s):  
Xu Ding ◽  
Xi Huang ◽  
Litong Sun ◽  
Jincai Wu ◽  
Jinglan Liu
Keyword(s):  
Abscisic Acid ◽  
Feeding Behavior ◽  
Brown Planthopper ◽  
Rice Cultivar ◽  
Nilaparvata Lugens ◽  
Electrical Penetration Graph ◽  
Callose Deposition ◽  
Abscisic Acid Biosynthesis ◽  
Biosynthesis Inhibitor ◽  
Deposition Area

Fluridone (FLU) was a pyrrolidone herbicide that was used for selective weeding in wheat, rice, corn and pasture and was also a biosynthesis inhibitor of abscisic acid (ABA), a significant plant hormone. ABA-promoted callose deposition facilitates rice resistance to pests but whether FLU had the opposite influence was unknown. The effects of FLU on the feeding behavior of the brown planthopper (Nilaparvata lugens Stål; BPH), after feeding with rice plants treated with FLU, were studied, using an electrical penetration graph (EPG). For susceptible rice cultivar (TN1), the duration for which BPH sucked phloem sap (N4 wave duration) after 15 μmol/L of FLU treatment was longer than that of the control but decreased after 30 and 60 μmol/L FLU treatments. Fecundity of BPH treated with 15 μmol/L FLU had no significant change, while the deposition area of callose was significantly decreased. For moderately-resistant rice cultivar (IR42), no differences in BPH feeding behavior and fecundity were observed but the deposition area of callose declined after treated with 15 μmol/L of FLU. These findings suggested that a low concentration of FLU (15 μmol/L) promoted BPH feeding behavior in TN1 but not in IR42 and the response in IR42 appeared to be more complicated, which provided supplementary evidence that ABA promoted plant resistance to BPH.

NGHIÊN CỨU ẢNH HƯỞNG CỦA MẬT ĐỘ GIEO SẠ ĐẾN SINH TRƯỞNG, PHÁT TRIỂN VÀ NĂNG SUẤT CỦA GIỐNG LÚA KHÁNG RẦY NÂU HP28 TẠI THỪA THIÊN HUẾ.

2014 ◽  
Vol 91 (3) ◽  
Author(s):  
Nguyễn Tiến Long ◽  
Trần Đăng Hòa ◽  
Trần Thị Lệ ◽  
Hoàng Hải Vân ◽  
Trương Thị Diệu Hạnh ◽  
...  
Keyword(s):  
Nilaparvata Lugens ◽  
Viet Nam ◽  
Nilaparvata Lugens Stål

Rầy nâu Nilaparvata lugens Stal (Homoptera: Delphacidae) là sâu hại nguy hiểm ở tất cả các vùng trồng lúa của Việt Nam. Gieo trồng giống lúa kháng rầy là biện pháp phòng chống rầy nâu có hiệu quả nhất trong hệ thống quản lý dịch hại lúa tổng hợp (IPM). Một trong số những giống lúa được đánh giá có khả năng kháng rầy nâu tại Thừa Thiên Huế là giống HP28. Tuy nhiên, để đưa giống này vào sản xuất trên địa bàn cần phải xây dựng và hoàn thiện quy trình kỹ thuật. Trong nghiên cứu này chúng tôi đánh giá ảnh hưởng của mật độ gieo sạ đến sinh trưởng, phát triển, và năng suất của giống lúa kháng rầy nâu HP28 trong vụ Đông Xuân và Hè Thu tại Thừa Thiên-Huế. Thí nghiệm được bố trí theo kiểu khối ngẫu nhiên đầy đủ (RCBD) với 3 lần nhắc lại, diện tích mỗi ô thí nghiệm là 20m2. Kết quả đã xác định được đối với giống lúa HP28 ở Thừa Thiên Huế với mật độ gieo 60kg/ha thóc giống cho năng suất cao nhất và tăng khả năng kháng rầy nâu  ở cả hai vụ Đông Xuân và Hè Thu.Từ khóa: Giống kháng, Nilarpavata lugens, rầy nâu, mật độ gieo sạ

scholarly journals Heat Stress Impedes Development and Lowers Fecundity of the Brown Planthopper Nilaparvata lugens (Stål)

PLoS ONE ◽  
2012 ◽  
Vol 7 (10) ◽  
pp. e47413 ◽  
Author(s):  
Jiranan Piyaphongkul ◽  
Jeremy Pritchard ◽  
Jeff Bale
Keyword(s):  
Heat Stress ◽  
Brown Planthopper ◽  
Nilaparvata Lugens ◽  
Nilaparvata Lugens Stål

RNA interference-aided knockdown of a putative saccharopine dehydrogenase leads to abnormal ecdysis in the brown planthopper, Nilaparvata lugens (Stål) (Hemiptera: Delphacidae)

2015 ◽  
Vol 105 (4) ◽  
pp. 390-398 ◽  
Author(s):  
P.-J. Wan ◽  
L. Yang ◽  
S.-Y. Yuan ◽  
Y.-H. Tang ◽  
Q. Fu ◽  
...  
Keyword(s):  
Brown Planthopper ◽  
Transcript Level ◽  
Nilaparvata Lugens ◽  
The Body ◽  
Double Stranded Rna ◽  
Saccharopine Dehydrogenase ◽  
Body Weights ◽  
Nilaparvata Lugens Stål ◽  
Phloem Feeding ◽  
Wing Deformation

AbstractThe brown planthopper Nilaparvata lugens is a serious phloem-feeding pest of rice in China. The current study focuses on a saccharopine dehydrogenase (SDH) that catalyzes the penultimate reaction in biosynthesis of the amino acid lysine (Lys), which plays a role in insect growth and carnitine production (as a substrate). The protein, provisionally designated as NlylsSDH [a SDH derived from yeast-like symbiont (YLS) in N. lugens], had a higher transcript level in abdomens, compared with heads, wings, legs and thoraces, which agrees with YLS distribution in N. lugens. Ingestion of Nlylssdh targeted double-stranded RNA (dsNlylssdh) for 5, 10 and 15 days decreased the mRNA abundance in the hoppers by 47, 70 and 31%, respectively, comparing with those ingesting normal or dsegfp diets. Nlylssdh knockdown slightly decreased the body weights, significantly delayed the development of females, and killed approximately 30% of the nymphs. Moreover, some surviving adults showed two apparent phenotypic defects: wing deformation and nymphal cuticles remained on tips of the legs and abdomens. The brachypterours/macropterours and sex ratios (female/male) of the adults on the dsRNA diet were lowered compared with the adults on diets without dsRNA. These results suggest that Nlylssdh encodes a functional SDH protein. The adverse effect of Nlylssdh knockdown on N. lugens implies the importance of Lys in hopper development. This study provides a proof of concept example that Nlylssdh could serve as a possible dsRNA-based pesticide for planthopper control.

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